﻿#region License
// Copyright © 2014 Łukasz Świątkowski
// http://www.lukesw.net/
//
// This library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this library.  If not, see <http://www.gnu.org/licenses/>.
#endregion

namespace Luminous.Windows.Converters
{
    using System;
    using System.Globalization;
    using System.Windows;
    using System.Windows.Data;
    using Luminous.Windows.Controls;

    [ValueConversion(typeof(CommandLinkIcon), typeof(Visibility))]
    internal class CommandLinkIconToVisibilityValueConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            CommandLinkIcon icon = CommandLinkIcon.None;
            if (value is CommandLinkIcon)
            {
                icon = (CommandLinkIcon)value;
            }
            if (icon == CommandLinkIcon.None)
            {
                return Visibility.Collapsed;
            }
            return (icon == CommandLinkIcon.Arrow ^ System.Convert.ToBoolean(parameter)) ? Visibility.Visible : Visibility.Collapsed;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return Binding.DoNothing;
        }
    }
}
